ditions would translate into trouble when it comes to supporting the new tile system installation. It is critical that any exterior tile installation, especially those attached to buildings, be sloped or pitched away from the building. The pitch must be at least 1/4” vertical fall for every 12” horizontal run. You want to make the planes to be tiled flat, but you would not want to make them level by placing a self leveler or any patch materials. IF all of the supporting struc- ture is correct and adequate and IF the slab is sufficient to sup- port the new installation, then the deck system can be considered. TCNA Handbook Methods 103B and 104B would most accurate- ly reflect the details required for the situation you are looking at. Please take a look at these in your Handbook and review them closely. Supporting structure, pitch away from the structure, waterproofing membranes, proper flashing to the structure, water runoff management systems, etc. are some of the critical points that must be considered. It sounds like this may be a situ- ation where the existing concrete should be removed and the sup- porting structure carefully analyzed. A method such as F105 could then The STONETECH line of surface care products offers solutions with superior protection to preserve the natural look of tile and stone surfaces. Recently, after extensive market research among distribu- tors and end users, LATICRETE revamped this line’s packaging to more effectively showcase prod- uct uses and benefits to bet- ter serve customers. Updates include new labels with cate- gory differentiators (green labels are for Cleaners, red labels are for Enhancing Sealers and yel- low labels are for Natural Look Penetrating Sealers) and informa- tive icons to easily identify no VOC or low VOC products, to name a few. www.laticrete.com. ASK THE EXPERTS –––––––––––––––––––––––––––––––––––––––––––––––––––– 26 TileLetter | June 2019